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Unusual case of primary cutaneous signet-ring cell (histocytoid) carcinoma
Anna Sayan1, Oliver Mitchell2, Saleem Taibjee3
1Poole Hospital NHS Foundation Trust.
Abstract:
Signet-ring cell (histocytoid) carcinoma is a rare and aggressive skin neoplasm that most commonly affects elderly men. It typically originates from the upper or lower eyelid, with bilateral involvement only in rare cases, and results in a diffuse and infiltrative appearance clinically, radiologically, and histologically (the "monocle" sign). It is essential to carry out a full investigation to rule out metastasis from an internal origin.
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